Unexpected old NAD

zontar · 2025-10-08T03:31:15-0400

I am now the owner of a Lectrosonics 18R Voice Projector Public Address Unit, a small 70s amp with minimal controls (one dial that clicks to turn it on, then you keep turning for more volume, this also increases the treble.)
It won’t be my number one amp, but it is fun, spent some time earlier today test driving it.
I would describe it as being a distortion or overdrive with a speaker, no clean tones, so that limits its use a bit.
But if I want that sound, it’s great.
it also has two RCA outlets, one for in, the other out.
I haven’t experimented with them yet.
it seems to have been designed as a portable PA, with a clip for a mic, but my slide fits in the clip perfectly.

had a lot of fun with it though.
Since I have an AB-Y pedal I can set that up and a more “normal” amp, and switch between them or have both on together.

the back has a space to hold the adapter. Apparently it had battery power, but that’s missing.

top view showing the “slide clip” and the RCA jacks.

I got it free, so the price was right.

Paul Running · 2025-10-08T05:16:08-0400

zontar said:
I would describe it as being a distortion or overdrive with a speaker, no clean tones

If you modify the input circuitry to accept higher input levels than a mic, you should be able to produce cleaner outputs. It originally had a rechargeable Ni-cad battery pack.
The attached manual may provide more info.

Edit: You could use the line level input from a pedal or preamp to obtain a clean signal, too.

Paul Running · 2025-10-08T08:37:28-0400

zontar said:
Apparently it had battery power,

It's 18VDC...if you have a spare laptop battery, you could adapt it for mobile applications.

zontar · 2025-10-08T13:52:47-0400

Paul Running said:
If you modify the input circuitry to accept higher input levels than a mic, you should be able to produce cleaner outputs. It originally had a rechargeable Ni-cad battery pack.
The attached manual may provide more info.

Edit: You could use the line level input from a pedal or preamp to obtain a clean signal, too.

thanks, I found the manual online as well after I posted this.
it looks like a later version or variation due to a couple of things, but close enough.
At this time I am okay to leave it as is, I love the sound, but thanks for the tip.
I plan to hook up a mic as I have one with the 1/4 inch plug.

Paul Running said:
It's 18VDC...if you have a spare laptop battery, you could adapt it for mobile applications.

I don’t have a spare lap top battery, but do have an old laptop that only works when plugged in, the battery is dead, so that seems unlikely to work.
but I will keep that in mind, because that could be cool.
Thanks

Unexpected old NAD

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